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US 2025/0145562 A1Published application
Visible light absorbers for ophthalmic devices
AssigneeBausch + Lomb Ireland Limited
InventorsWalter Laredo, Jeffrey Linhardt
Life of this patent
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Abstract
A visible light absorbing azo compound having a structure of Formula I: wherein X1, X2, X3, Y and Z are as defined herein, and ophthalmic devices formed therefrom.
Claims20
A visible light absorbing azo compound having a structure of Formula I:
- wherein X1, X2 and X3 are independently hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group;
- Y is hydrogen, a substituted or unsubstituted alkyl group, or a vinyl group or an allyl group;
- and Z is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group, wherein at least one of X1, X2, X3, Y and Z is a vinyl group or an allyl group.
An ophthalmic device which is a polymerization product of a monomeric mixture comprising:
- (a) a visible light absorbing azo compound having a structure of Formula I:
- wherein X1, X2 and X3 are independently hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group;
- Y is hydrogen, a substituted or unsubstituted alkyl group, or a vinyl group or an allyl group;
- and Z is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group, wherein at least one of X1, X2, X3, Y and Z is a vinyl group or an allyl group;
- and
- (b) one or more ophthalmic device-forming monomers.
3 more elements
A method for making an ophthalmic device, comprising:
- (a) providing a monomeric mixture comprising:
- (i) a visible light absorbing azo compound having a structure of Formula I:
- wherein X1, X2 and X3 are independently hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group;
- Y is hydrogen, a substituted or unsubstituted alkyl group, or a vinyl group or an allyl group;
- and Z is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a vinyl group or an allyl group, wherein at least one of X1, X2, X3, Y and Z is a vinyl group or an allyl group, and
- (ii) one or more ophthalmic device-forming monomers;
- and
- (b) subjecting the monomeric mixture to polymerization conditions to provide an ophthalmic device.
5 more elements
Dependencies are inferred from the claim text.